In my experience, I have seen many instructors start the online teaching and jump right into the course without reviewing the material first. When they do this they are not aware of any errors that may be in the course or what they students are doing. The instructor may not be able to help answer any questions in a timely manner. I definitely think that without the proper preparation for the course that the students are at a severe disadvantage. Instructors of online training need to be prepared and be an expert at the course in order to keep the students engaged.